Improvement in air-flues for stoves



.I. F. LANGLAIS,

Air-Flues for Stdves.

N0.156 ,O92, Patented Oct. 20,1874.

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UNITED STATES PATENT CFFIoE.

JOSEPH F. LANGLAIS, OF MEMPHIS, TENNESSEE.

IMPROVEMENT IN AlR-FLUES FOR STOVES.

Specification forming part of Letters Patent N0. 156,092, dated October20, 1874; application filed March 14, 1874.

To all whom it may concern Be it known that I, JOSEPH F. LANGLAIS, ofMemphis, in the county of Shelby and State of Tennessee, have invented anew and valuable Improvement in Stoves; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being bad to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

Figure 1 of the drawing is a representation of a front elevation of mystove. Fig. 2 is a top view, and Fig. 3 is a sectional view, of thesame.

This invention has relation to means for supplying thecombustion-chambers or combustion-flues of stoves with highly-heated airfor the purpose of promoting combustion therein.

The nature of my invention consists in a T- shaped air-flue appliedtothe top plate of the stove over the combustion-chamber andcommencement of the flue between the top ovenplate and said topstove-plate, in combination with a flue leading to the hearth, whichlatter is provided with a register, as will be hereinaiter explained.

In the annexed drawings, I have represented my improvements applied to asingleoven cook-stove, in which A designates the front plate of thestove; B, the top plate; 0, the hearth; D D, registers for introducingcold air directly into the fire-chamber G; F, the smoke-flue between thetop plate of the oven 0 and the top plate B of the stove; and J is theash-pit. These parts may be constructed in the usual well-known manner,as represented in the drawings. At the middle of the length of thehearth a hole is made through this hearth, and provided with a register,a. Beneath this register is a short horizontal flue, E, whichcommunicates with a vertical flue, E applied to the inner side of thefront plate A, and extended to the top plate B, where it communicateswith the longitudinal portion of a T-shaped flue, E This flue E isapplied to the bottom side of the top plate B, and is not so wide as tobe in the way of the pot-holes through this plate, as shown in Fig. 2.The transverse branches 0 e of the flue E are open at their extremities,and these branches are so arranged that the flame and highly-heatedproducts of combustion will impinge against them while passing into theflue F from the fire-chamber. The vertical and horizontal portions E Eof the air-flue are also exposed to the heat in the fire-chamber.

It will be seen from the above description that, when a fire is made inthe chamber G, and the register a is opened, air will be induced to passthrough the flues E E E and escape in a highly-heated condition fromthe.

extremities of the branches 6 e, Where it will mix with the flame andsmoke, and cause a more or less complete combustion of the same.

Three of the walls of the lire-chamber are double, and the spacesbetween these double walls are supplied with air through perforationsmade through the side walls of the stove, as shown in Fig. 3. This willprevent a rapid destruction of the fire-wall plates.

I am aware that it is not new to introduce heated air into thefire'chambers of stoves and furnaces for the purpose of promotingcombustion therein; but I am not aware that airheating flues have everbeen used, arranged as I have above described and shown, with a registerapplied on the hearth-plate at the point where the air enters saidflues, and with a T- shaped flue constructed on the bottom of the plateB.

What I claim as new, and desire to secure by Letters Patent, is

In a stove, the combination and arrangement of the flues E E E e e andthe register a, substantially in the manner and for the purpose setforth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

JOSEPH F. LANGLAIS.

Witnesses:

Tnos. N. BELL, THos. F. MEATH.

